Energy: National Security

(asked on 21st July 2025) - View Source

Question to the Department for Energy Security & Net Zero:

To ask the Secretary of State for Energy Security and Net Zero, what assessment his Department has made of the potential impact of large-scale energy grid failure scenarios on the resilience of the UK’s (a) critical infrastructure, (b) public services and (c) defence and emergency response capabilities.


Answered by
Michael Shanks Portrait
Michael Shanks
Parliamentary Under Secretary of State (Department for Energy Security and Net Zero)
This question was answered on 4th September 2025

Large-scale energy grid failure has the potential to severely disrupt all other critical systems and cause widespread disruption to public services provisions, businesses and households. However, Great Britain has a highly resilient energy system. The National Electricity Transmission System has never experienced a complete shutdown, and the likelihood of this occurring is assessed as low in the National Risk Register.

Nonetheless, Government prepares for all eventualities and works with a range of stakeholders across the private sector and public sector to prepare for and exercise robust contingency plans, including planning to maintain emergency response and defence capabilities.

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